中国发明专利：一种含氢键的线型偶氮苯聚合物及其制备方法与应用

发明（设计）人：竺翀宇，俞燕蕾，孙家豪

申请人：复旦大学

专利号：ZL 202010686469.0

摘要：

本发明属于聚合物材料技术领域，涉及一种含氢键的线型偶氮苯聚合物及其制备方法与应用。聚合物分子链为线型结构，偶氮苯基元位于聚合物主链，分子链间存在氨酯键提供的氢键物理交联。与现有技术相比，本发明提出的含氢键的线型偶氮苯聚合物合成步骤简单，能够通过熔融和溶液法加工，且成型尺寸和形状无限制，加工成型后可回收循环再利用。加工成型后经过预编辑或不编辑，聚合物在特定波长的光照下会发生形状变化。此外，这种聚合物通过调控偶氮苯两侧间隔基以及二异氰酸酯的结构可以极大地调控其力学及光响应形变能力。

Abstract：

The invention belongs to the technical field of polymer materials and relates to a hydrogen bond-containing linear azobenzene polymer as well as a preparation method and application thereof. The molecular chain of the polymer is of a linear structure, azobenzene elements are located on a main chain of the polymer, and hydrogen bonds provided by urethane bonds exist between the molecular chains forphysical crosslinking. Compared with the prior art, the hydrogen bond-containing linear azobenzene polymer provided by the invention is simple in synthesis steps, can be processed by a melting and solution method, is not limited in molding size and shape, and can be recycled after being processed and molded. After processing and molding, through pre-editing or non-editing, the shape of the polymer can be changed under the illumination of a specific wavelength. In addition, the polymer can greatly regulate and control the mechanical and photoresponse deformability of the polymer by regulating and controlling spacer groups on two sides of azobenzene and the structure of diisocyanate.